Valve



PATENT OFFICE.

GEORGE W. THOMPSON, O F GHEBOYGAN, MICHIGAN.

VALVE.

Specification of Letters Patent. Patentd J 14 1921 Application filed. January 3, 1920. Serial No. 349,193. I

To all whom it may concern Be it known that I, GEORGE, W. THOMP- soN, a citizen of the United States, and a resident of Chebovgan in the county of Cheboygan and State 0 Michigan, have invented certain new and useful Improvements in Valves, of which the-following is a specification.

My invention is an improvement in valves, and the invention has for its object to provide a valve for interposition in the fuel line and in the oil supply line of a motor vehicle for controlling the flow of the fuel from a supply tank to the carbureter, by the pressure in the oil line, and so arranged that when the pressure in the oil line is reduced below a predetermined point the suipply of fuel to the carbureter will be cut In the drawings:

Figures 1 and 2 are vertical sections of the valve, showing the parts in different positions;

Fig. 3 is a section on the line 3--3 of %n the present embodiment of the invention the improved valve comprises a casing consisting of a cylindrical body 1 and heads 2 and 3 connected therewith, the said heads being threaded on to the ends of the body, and the body has lateral outlets 4 and 5, the outlet 4 being for the oil, while the outlet 5 is for connection with the carbureter.

The head 2 of the casing has a nipple 6', which is adapted to be connected with the supply tank 7, by means of a nipple 8 .on the tank, which is threaded within the nipple 6. This nipple 6 has a valve seat 9 just within the head and a spherical check valve 10' cooperates with the seat. The inlet 11 for the oil also extends laterally from the casing, the said inlet being spaced below the outlet 4, as shown.

A partition 12 is arranged transversely of the casing just below the fuel outlet 5 which is above the oil outlet 4, and the said partition is between the said outlets, separating the easing into a fuel compartment and an oil compartment.

A plunger 13 is arranged in the oil compartment and a stem 14 which is connected with the plunger extends upwardly through a central opening in the partition 12, to and within the lower end of the nipple 6. It will be noticed that the stem 14 has an enlarged ortion 15 intermediate its ends, which, by its engagement with the partition 12, limits the downward movement of the plunger 13 and the stem to aposition such that the plunstill within the nipple 6, that is, the en largement 15 limits the movement of the stem to a position such that it will not dis engage at its upper end from the nipple, and such that the plunger 13 cannot pass below theinlet 11.

r A disk 16 is connected with the plunger ust above the enlargement 15, the disk bemg held in place between the enlargement and a lock nut 17 on the stem. This disk has openings, as shown, so that the fuel is free to, pass through the disk, and a coil spring 18 is arranged above the disk, between the same and a disk 19 at the lower end of the nipple, the said disk 19 havinga central opening for the stem.

In operation, the flow of fuel into the easng 1s controlled by thefpressure of the oil 1n that portion of the casing below the plunger 13. With the parts in the position of F 1g. 2, when oil is turned on, the pressure of the oil will lift the plunger 13 and the upper end of the stem 14 will unseat the valve 10, permitting the fuel to flow, and the lifting of the plunger 13 will connect the inlet 11 with the outlet 4, so that the oil can flow from the chamber.

As long as there is a predetermined pressure of oil, determined by the tension of the spring 18, the fuel -will be permitted to flow. s soon as the oil fails to flow, the pressure below the plunger 13 will be lessened, there being no outflow of oil, and the plunger 13 will be moved downwardly by the spring 18. The valve 10 will seat, cutting offthe fuel to the carbureter, Also, stem 14 at point 15 will seat in partition 12, so as to stop leakage of gas to oil chamber.

A primer is provided for lifting the plunger 13 when necessary. This primer, as shown, is a stem 20 mounted to slide through the head 3 and having a head at its outer end and a head at its inner end which is adapted to engage the plunger when the same is moved upwardl to lift the plunger. The stem is normal'y pressed outwardly by a spring 21. When in this position stem 20 seats in cap 3, to stop leakage of oil from chamber.

I claim:

In combination, a valve casing adapted to be interposed in the fuel line and the oil m mei et line of any gas or oil burning motor and the inlet port of the fuel compartment, :1 10

having a partition dividing the casing into a ball seating upon and closing the fuel inlet fuel compartment and an oil compartment, adapted to be unseated by the engagement the fuel compartment having an inlet at the of the plunger stem therewith When the top and an outlet near the partition, and the plunger is above the oil outlet and the inlet -oil compartment having inlet and outlet and the outlet of the oil compartment are 15 ports spaced apart vertica1ly,ap1unger movin communication, and a spring normally able in the oil compartment and having a pressing the Gplun er downwardly. stem extending through the partition into E0 GE W. THOMPSON. 

